New Computer Attacks Come From Iran, Officials Say - NYTimes.com

Excerpt from a stark cyberwarfare reality check

"American officials have not offered any technical evidence to back up their assertions of Iranian authorship of the latest attacks, but they describe the recent campaign as different from most attacks against American companies — particularly those from China — which quietly siphon off intellectual property for competitive purposes.
The new attacks, officials say, were devised to destroy data and manipulate the machinery that operates critical control systems, like oil pipelines. One official described them as “probes that suggest someone is looking at how to take control of these systems.”"

New Computer Attacks Come From Iran, Officials Say - NYTimes.com